/Engine/Source/Runtime/AppFramework/Public/Widgets/Colors/SColorThemes.h
Called during drag and drop when the drag enters a widget.
A reply that indicated whether this event was handled.
virtual void OnDragEnter ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & MyGeometry, const [FDragDropEvent](API\Runtime\SlateCore\Input\FDragDropEvent) & DragDropEvent )